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Modern scientific calculators generally have many more features than a standard four or five-function calculator, and the feature set differs between manufacturers and models; however, the defining features of a scientific calculator include:

scientific notation

floating point arithmetic

logarithmic functions, using both base 10 and base e

trigonometric functions (some including hyperbolic trigonometry)

exponential functions and roots beyond the square root

quick access to constants such as pi and e

In addition, high-end scientific calculators generally include:

cursor controls to edit equations and view previous calculations

hexadecimal, binary, and octal calculations, including basic Boolean math

complex numbers

fractions calculations

statistics and probability calculations

programmability — see Programmable calculator

equation solving

matrix calculations

calculus

letters that can be used for spelling words or including variables into an equation

conversion of units

physical constants

While most scientific models have traditionally used a single-line display similar to traditional pocket calculators, many of them have at the very least more digits (10 to 12), sometimes with extra digits for the floating point exponent. A few have multi-line displays, with some recent models from Hewlett-Packard, Texas Instruments, Casio, Sharp, and Canon using dot matrix displays similar to those found on graphing calculators.